I-Glycogen i-carbohydrate eyinkimbinkimbi ehlanganisa ama-molecule e-glucose axhunywe ngethunge.
Ukwenziwa kwe-glycogen (glycogenesis) kwenzeka kungakapheli amahora angu-1-2 ngemuva kokungenisa kokudla kwe-carbohydrate. I-glycogen enamandla kunayo yonke eyenzeka esibindi. Ngaphezu kwalokho, i-glycogen iklanyelwe emisipha yamathambo.
Elinye i-molecule ye-glycogen ihlanganisa cishe izinsalela eziyizigidi eziyi-glucose. Leli qiniso likhombisa ukuthi umzimba uchitha amandla amaningi ekukhiqizeni i-glycogen.
Ukuwohloka kwe-glycogen
Ukuwohloka kwe-glycogen (glycogenolysis) kwenzeka ngezikhathi phakathi kokudla. Ngalesi sikhathi, isibindi senza i-glycogen kuyo ngesilinganiso esithile, okuvumela umzimba ukuba ugcine ukuhlunga kwegazi emzimbeni ngezinga elingashintshi.
Indima yemvelo ye-glycogen
I-glucose iyinhlangano eyinhloko yamandla emzimbeni, esekela imisebenzi yayo eyisisekelo. Isibindi sigcina i-glucose ngesimo se-glycogen, hhayi kakhulu izidingo zayo, njengokunikeza ukungena kweglucose kwezinye izicubu - ikakhulukazi amangqamuzana egazi obomvu nobuchopho.
Njengoba kushiwo ngenhla, amaseli omzimba, njengamaseli wesibindi, nawo akwazi ukuguqula i-glucose ibe yi-glycogen. Noma kunjalo, i-glycogen, equkethwe emisipha, isetshenziswa kuphela kumsebenzi we-muscle. Ngamanye amazwi, i-glycogen emisipha ihlala ingumthombo we-glucose kuphela ngeseli ngokwalo, kuyilapho i-glycogen igcinwe esibindi, ngemva kokucubungula i-glucose, isetshenziselwa ukudla okunomsoco wenyama yonke, futhi okubaluleke kakhulu ekulondolozeni ukuhlunga kahle kweglucose egazini.
Ukwenziwa nokuchithwa kwe-glycogen
Ukwenziwa nokuchithwa kwe-glycogen kulawulwa yisimiso sezinzwa namahomoni. Lezi izinqubo ezimbili ezizimele ezenzeka ngezindlela ezahlukene. Njengoba sesibonile kakade, indima enkulu ye-glycogen yilawu mthethonqubo wokuhlunga kwegazi glucose egazini, kanye nokudalwa kwaleyo galesi ye-glucose, okudingekayo ukuze kwenziwe umsebenzi omkhulu wemisipha.